Finding the Fourth Proportional to 145,540.13, 200,845.98 and 81,878.99
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Solution
The fourth proportional to 145,540.13, 200,845.98 and 81,878.99 is: 112,993.34
Step by Step Solution
- Step 1: Write the proportion equation
145,540.13 : 200,845.98 = 81,878.99 : x - Step 2: Convert to fraction form
145,540.13/200,845.98 = 81,878.99/x - Step 3: Cross multiply
145,540.13x = 200,845.98 × 81,878.99 - Step 4: Simplify right side
145,540.13x = 16,445,064,983.73 - Step 5: Solve for x
x = 16,445,064,983.73/145,540.13 - Step 6: Final answer
x = 112,993.34
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.